- Legend Control Panel
- Legend Services
- Domain Names
- Hosting
- Internet
- What is ADSL?
- ADSL with Linux
- Can I use two ADSL modems at once?
- Can you share the USB modem between 2 or more computers?
- Does it work with Linux?
- How does ADSL compare to a dial-up or leased line connection?
- How do I test the speed of my ADSL connection?
- How is ADSL different from a dial-up modem?
- Minimum requirements for an Internet connected Mac via USB ADSL
- Minimum requirements for a PC connecting to the Internet through USB ADSL
- Router Troubleshooting Information
- Should I use a modem or router?
- TCP/IP Settings for NAT (Private Addressing)
- TCP/IP Settings for No-NAT (Static IP / Routable IP)
- Tweaks for improved ADSL performance
- What are contention ratios?
- What are the line tests that BT conducts?
- What if my PC is not next to a telephone socket?
- What is a DSLAM?
- What is a splitter/micro-filter?
- What is G.DMT?
- What is NAT?
- What is PPPoA or PPPoE support?
- What is Rate Adaption (RADSL)?
- What is the activation procedure?
- Who is responsible for billing?
- Why do I need a firewall?
- Will I still need to pay for my telephone line rental and telephone calls?
- Will other BT services such as "Call Waiting" still work?
- Framestream
- Framestream Errors
- Databases
- General Settings
- Legend Host Migration
- Legend Mail Migration
What are contention ratios?
The main drawback of ADSL is contention ratios. ISDN and leased line services offer dedicated bandwidth to users however Broadband for Business ADSL is a contended service provided through BT's network stated at 20:1. This means that if there are several active users (up to 20) on the network, the available bandwidth will decrease resulting in the service slowing down.
The Home/Small Office service uses a 50:1 contention. This means that if there are several active users (up to 50) on the network, the available bandwidth will decrease resulting in the service slowing down.